871101901987 has 8 divisors (see below), whose sum is σ = 892199794176. Its totient is φ = 850110835272.

The previous prime is 871101901921. The next prime is 871101901993. The reversal of 871101901987 is 789109101178.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 871101901987 - 2¹¹ = 871101899939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871101901907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26689863 + ... + 26722480.

It is an arithmetic number, because the mean of its divisors is an integer number (111524974272).

Almost surely, 2^871101901987 is an apocalyptic number.

871101901987 is a deficient number, since it is larger than the sum of its proper divisors (21097892189).

871101901987 is a wasteful number, since it uses less digits than its factorization.

871101901987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53412737.

The product of its (nonzero) digits is 254016, while the sum is 52.

The spelling of 871101901987 in words is "eight hundred seventy-one billion, one hundred one million, nine hundred one thousand, nine hundred eighty-seven".